Welt-rolling machine



March 29, 1927. 1,622,281

- A. H. HAVIR WELT ROLLING MACHINE IN YENTOR i fid WW Patented Mar. 29, 1927.

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Application filed February This invention relates to improvements in machines particularly adapted for use 111 rolling and shaping the welt or upper outer edge of the sole of; an ordinary shoe, in its preparation fora new sole, after the shoe has been worn to the extent that it is found necessary to have it re-soled. It is, therefore, a machine particularly adapted for use in repair shops speifializ ing'in shoe repair work.

in the general construction-of an ordinary shoe there are five essential parts; the upper or body of the shoe, the insole, the welt,-the filler, and the outsole. The first four parts are usually secured together in fined relation to each other with "the welt formingen outwardl projecting horizontal flange around the bottom of the unfinished shoe. This flange, commonly known as the welt 'of the shoe to those familiar with the art, is usually constructed of a softer or more porous grade of leather, its location being such that it is not subjected to much wear. The primary purpose of this welt is to provide a supporting means for the outsole, usually secured theretoby stitching or any other suitable means. Incidentally it also forms a protection for the u per part of the shoe;

In the drawing, lgiaveshown the relative position of the five essential parts or a. shoe. Une figure shows the usual condition of the welt after a shoe has been worn for a while. It will be noted that ithas the appearance of being upset between the'upper-part'of the shoe and the outsole'. This is the result Of the other edge of the welt expanding or swelling, from contact with moisture and other causes. Also it will be noted that the upper part of the shoe slightly overhangs the'welt, caused by the body'of the shoe .lightly stretching and bulging. It will therefore, we readily understood that it would be practically impossible to efficiently secure a sole to the welt of a shoe, when in the condition above described.

Therefore, when it is desired to resole a pair of h e mean must :be provi wh r y h w lt may e reshap d nd pr pared ins ch. a m nner a t present a outwardly projecting flange to which the mu cl may be se ured i the usua mann .l' telt rolling. machine n u a th Prese time are usu lly provided wit a tqqtlpeda y m ns of wh ch the apera qrmay sat ra the plunger p unge h ad, tenth air-- 1, 1923. Serial No. 616,363.

pose of gripping the welt between the usual feed rolland the plunger head, to perform requiring the manipulation of a foot pedal,

when performing the welt rolling operation. El -st, "the operator cannot leave the machine when the shoe is positioned therein'without removing the shoe from the apparatus. This is the result of the plunger head releasing ts grip upon the welt, as soon asthe operator removes his foot from the pedal. Another objection arises from the fact that the pressure exerted upon the welt may not always be" uniform, as it is dependent upon the action of the operators foot upon'the pedal.-

The novel weltrolling machine featured in this invention is particularly designed and adapted for use to roll, and thus reshape and prepare the welt or edge of the sole in such a manner as to provide sufiicient room or space between the upper side of the welt and the body of the shoe to permit the usual stitching necessary to secure the sole to the shoe It also provided with means for securely lea in headiusta le m an Pro i f yie d h y hQldi ls' h l we p n er m against the welt of the shoe, when positioned in the machine for rolling and reshaping, thus dispensing with the usual foot pedal rdinarily provided in machines designed 1' hi purpose- 7 hu by sl t atin h asualfoot pe and sulostituting the improved plunger loc-l r ngmeans, featured in the invention, the operator will be free to leave the machine at any time during the welt rolling operation, without having to remove the shoe from the machine. Also :a uniform pressure will be exerted'upon the welt during the entire operetiqn- The specific objectof this invention, threefore, is to proyide an improvedwelt rolling machineiof simple and inexpensive construction, capable Qt rel-l ng and Prep g th are? Qtany r ho yteaa id s re or style, in such a nianner as to permit new le t he re d ly se ther o by ei hand .0 m hi e sure a des red Qther objects of theinvention will more tel y appea from t oll w n de il securities and the a ter-"readying dual-ri of the invention but it is to be understood that the invention is not confined to the exact features shown, as various changes may be made within the scope of the claims which follow.

In the drawings:

Figure 1 is a view in front elevation of a welt rolling machine, showing my invention applied thereto and also showing a portion of a shoe positioned in the machine for the welt rolling operation;

Figure 2 is a'view in side elevation of the apparatus, showing the plunger locking means released to permit the positioning of the shoe welt between the plunger head and the feed roll;

Figure3 is a view in vertical section on theline 33 of Figure 4, showing the lock ing means in their locking position, and also showing in dotted lines, a shoe welt positioned between the plunger and feed roll;

Figure 4 is a horizontal sectional view on the line 44 of Figure 3;

Figure 5 is a detail view of a portion of a shoe, showing the usual form or shape of the welt of a worn shoe before it is rolled and Figure 6 is a similar view, showing the welt after having been rolled and reshaped in the welt rolling machine, to receive a new sole.

In the selected embodiment of the invention shown in the accompanying drawings, there is illustrated a welt rolling machine comprising an upright standard or frame 11, and the usual feed roll or wheel 12, preferably secured to one end of the usual shaft 13, rotatably mounted in a suitable bearing 14 provided in the upper portion of the frame 11. A suitable hand crank 15 is secured to the'opposite end of the shaft 13 by any suitable means, such for instance, as a set screw 16 (Figure 1). Rotation of the feed roll 12 will thus be effected by manually rotating the crank 15.

The usual means provided in welt rolling machines for gripping and forming the welt or outer edge of the shoe sole are shown, and consist of the plunger or ram 17, reciprocallv mounted in an integral bearing 18 provided on the frame 11, directly beneath the axis of the feed roll 12. This plunger is provided at its upper end with a flanged circular head 19', preferably integral therewith, which is arranged in such a manner as to have its outer edge substantially in a vertical line with the outer face of the feed roll 12, as indicated in Figure 1. The lower terminal end of the plunger is provided with a socket 21, adapted to receive a suitable ball 22, loosely mounted therein for the purposes of providing an anti-friction contact between the plunger and its'actuating means. The ball is retained in the socket 21, preferably by slightly inwardly rolling the lower edge of the depending flange 23 of the plunger. Means are also provided for actuating the plunger when the welt and sole of the shoe are positioned upon the flanged head 19 of the plunger, for the welt rolling operation. A rocker 24 is loosely mounted upon a short shaft or stud 25, supported upon the frame 11 by means of an integral. boss 26. The shaft 25 is preferably provided with a suit able collar or head 27 to retain the rocker 24 upon the shaft. Integral arms 28 and 29 are preferably provided upon the rocker 24, andoutwardly project therefrom as indicated in Figiiires 2 and 3. The arm 28 is arranged in substantially a vertical line with reference to the vertical axis of the plunger 17, and is adapted to engage the ball 22 for the purpose of actuating the plunger 17.

The oppositely extending arm 29 is preferably provided with an aperture 31, adapted to receive therein, the lower terminal end of a suitable connecting rod or bolt 32. An integral head 33 is preferably provided at the upper terminal end of this rod, and is apertured to pivotally receive a headed stud 34, secured to the lower offset arm 35 of a suitable hand lever 36. This lever is pivotally mounted upon the upper portion of the frame 11 by means of an arm 37, preferably integral with the frame 11, and a shouldered pivot pin 38, secured to the arm,

As is shown in Figure 3, an enlarged threaded portion 39 is provided on the upper portion of the rod 32, adjacent the head 33, adapted to receive in threaded engagement thereon, a knurled adjusting nut 41 (Figure 3). A coiled compression spring 42 is mounted upon the rod 32 and has its upper end bearing against the underside of the adjusting nut 41, while its lower end bears against the top face of the arm 29. able pin 43 is preferably provided at the lower terminal end of the rod 32, to prevent the rod from becoming disengaged from the arm 29. Referring to Figure 4 it will be noted that the rod 32 carrying the spring 42, is substantially on a line with the inner face of the rocker 24. The purposeof olfsetting the rod and spring as above stated, is to prevent interference with the shoe when rolling the welt, also indicated in Figure 1.

In Figures 1 and 3 I have shown the lever 36 in its locking position, the bearing 14 providing a suitable stop therefor. When in this position it will be noted that the relative locations of the pivot pin 38 upon which the lever 36 is mounted, the stud 34, provided in the arm 35, and the lower end of the rod 32 are not in a true line. It will also be noted that the stud 34 has passed beyond a straight line drawn through the A suitaxis of the pin 38 and the lower end of the rod 32. Therefore, when in the above described position it will be readily seen that the rod 32 will be positively prevented from upward movement, due to its action being to force the arm 35 outwardly away from. the main frame 11, and therefore the hand lever 36 against the bearing I l. The spring 42 will bear against the arm 29, tending to move it downwardly, thus exerting an upward force against the lower end of the plunger, by means of the arm 28 and ball 22. The flanged head 19 of the plunger will thus be yieldably held against the welt of the shoe, hearing against the underside of the feed roll 12. To release the shoe from the machine, the operator will simply move the hand lever 36 from the position shown in Figure 3, to that shown in Figure 2.-

Another important feature of this invention resides in the simple and effectivemeans provided for adjusting or varying the pressure exerted upon the welt when inserted between the feed roll and plunger head for rolling and reshaping. This adjustment is effected by simply rotating the knurled adjusting nut 41 in either one direction or the other, until the required pressure has been attained. Also by the employment of the above described mechanism a uniform pressure will be retained during the entire welt rolling operation.

In Figure 5, I have shown the usual condition or shape of the outer edge of the welt after a shoe has been worn, and before it has been reshaped in its preparation to receive a new sole. Figure 6 shows the welt after having been rolled and reshaped in my improved welt rolling machine.

I claim as my invention:

1. In a welt rolling machine, relatively movable members between which the welt is gripped and rolled, oscillating means for forcing one of said members toward the other one, and mechanism adapted to hold said one member in its welt gripping position.

2. In a welt rolling machine, a roller and a plunger between which the welt is gripped, a lever mechanism for moving said plunger toward said roller to clamp the welt, the connections of said lever being adapted for holding it and said plunger in their welt clamping position.

8. In a welt rolling machine, means for clamping and rolling the welt, a rocking arm mounted to exert pressure on said clamping means, and a self-locking mechanism for rocking said arm to move said clamping means to its clamping position and holding it in such position.

4. In a welt rolling machine, members between which the welt is gripped and. rolled, and a self-locking mechanism for moving one of said members to its clamping position and holding it in such position.

5. A welt rolling machine comprising a frame, clamping means between which the welt is inserted and rolled, a member mounted to move said clamping means to its clamping position, a lever, a pin mounted thereon h ring a loose yielding connection with said member, the pivot of said pin on said lever bein arranged to swing past the pivot of said lever and hold said lever in its locking position.

6. A welt rolling machine comprising a frame, welt clamping and rolling means mounted therein, a rocking member mounted to exert pressure on said clamping means to move it to its clamping position, a lever pivoted on said frame and having an angular extension near its pivot, a pin pivotally connected with said extension and having a loose connection with said rocking member, a compression spring mounted on said pin, movement of said lever in one direction operating to exert a yielding pressure on said member, and movement of said lever in the opposite direction releasing such pressure.

7. In a welt rolling machine, a roller and a plunger having a head with a thin edge between which and said roller the welt is gripped, a rocking member mounted to move said plunger toward said roller to grip the welt, and a lever having a yielding operative connection with said rocking member.

8. In a welt rolling machine, relatively movable members between which the welt is gripped, oscillating means for forcing one of said members toward the other one, and mechanism having a yielding pivotal connection with oscillating means and adapted to hold it in its welt gripping position.

9. In a welt rolling machine, a roller and a plunger having a flanged head between which and said roller the welt is gripped, the edge of said flanged head being flush substantially with the face of said roller, and mechanism operatively connected with said plunger for holding it against the welt with a uniform pressure.

In witness whereof, I have hereunto set my hand this 29th day of January 1923.

ANDREW H. HAVIR. 

